screenshot taken from: https://numfocus.org
When
Wednesday, 19th August 2026, 6:00pm to 9:00pm
Where
GetYourGuide Office, Sonnenburger Straße 73, Berlin, Germany
Hosting Organization
PyData Berlin
Participation Fee
Free Entrance
Agenda
Socializing, Host Intro, Talk 1, Break, Lightning Talk, Talk 2, Socializing
Topics Covered
The General Berlin Vacation Period & The Legal Entity behind the Tech Event NumFOCUS (Host Intro), Implementing an Intent-Aware Ranking for a Personalized Marketplace Experience (Talk 1), Predicting Personalized Digital Signal Processing Parameters Based on User Interactions (Lightning Talk), Accelerating Large-Scale Fixed-Effects Regression with Rust and PyFixest (Talk 2)
I’ve learned something today
- Fixed-effects regression estimates an effect by comparing changes within the same individuals or groups over time. For example, it can measure a workplace policy’s impact by comparing each employee’s productivity before and after its introduction.
- PyData is a global educational program that brings together users and developers of open-source data tools, including Python, Julia, and R. It is organized by NumFOCUS, a U.S.-based nonprofit that uses any of PyData’s proceeds to support scientific software and advance the data science community.
- User intent describes a user’s goal on an online marketplace. Discovery intent focuses on exploring options. Transaction intent focuses on completing a specific purchase. This distinction helps the marketplace rank products and design experiences that match the user’s current goal.
- A decision tree turns complex user behavior into clear, explainable categories. Its visual structure makes the model easy for product teams to understand and align on. Each branch can inform a concrete UX decision, making product improvements easier to prioritize and communicate.
- Having an animated conversation about applying machine-learning methods during a break at a tech event can encourage nearby attendees to join in. This makes it easier for people with similar expertise to connect without needing a formal icebreaker. In a sense, it is an indirect and natural way of introducing yourself to others.
- A multi-task ranking system learns to rank items while optimizing several objectives, such as relevance, clicks, and purchases. It is harder to implement than a single-task ranking system because the objectives can conflict, require different data, and must be carefully balanced.
- The Get Your Guide Headquarter in Berlin was an impressive tech event venue:
picture taken at venue
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